How to merge matrix A = [0,1,2], matrix B = [5,6,7] into matrix C = [0,5,1,6,2,7]

How to merge matrix A = [0,1,2], matrix B = [5,6,7] into matrix C = [0,5,1,6,2,7]

c=cat(1,A,B);
c=c(:)'

Finding eigenvalues of matrix A = (3 1 - 1; - 7 5 - 1; - 6 6 - 2)

If there are examples in the textbook, just draw a gourd according to the example. Turn over the book. The eigenvalue of a is derived from the characteristic equation
　　　　|A-λE|=0
It can be solved

Matrix A = [1 2 3; 4 5 6; 7 8 9] B = [1 2 3] find a * b * a

A is 3 × 3, B is 1 × 3
So only B × a exists, and B * a = [30 36 42]

Whether to add countable or uncountable nouns after "several" and "a number of"

Plural of countable nouns

In △ ABC, ab = AC = 10, BC = 16, find the value of tanb and cotb
This triangle is not a right triangle. How can we find the value of tanb and cotb?
Wait for the answer online!

Make ad perpendicular to BC at point D
Then BD = CD = 8
According to Pythagorean theorem, ad = 6
therefore
tanB=AD/BD=3/4
cotB=BD/AD=4/3

English translation
Writing stories
Learning musical instruments

write a story
learn to play a musical instrument

If a, B and C are the three sides of triangle ABC, the equation x ^ 2-2ax + (B + C) ^ 2 = 0 is known
Ask if it is possible for the equation to have two equal real roots. If it is possible, clearly indicate the shape of the triangle satisfying the condition. If it is not possible, explain the reason

There are two equal real roots,
Namely
Δ=4a²-4(b+c)²=0
a²-(b+c)²=0
(a-b-c)(a+b+c)=0
because
a+b+c>0
b+c>a
therefore
impossible

Tell me some phrases about Christmas

Wish you a song in your heart at Christmas and blessings all year long

Add a natural number to the numerator and denominator of one seventh fraction to get another fraction of three fifths
The solution of a series of equations

Let this natural number be X
(1+x)/(7+x)=3/5
5(1+x)=3(7+x)
x=8
The natural number is 8

The difference between the other and the other as adjectives to modify countable nouns
Give an example

"Other" is another general term, often used to modify plural nouns
Some students like English,and other students like Spanish.
However, if the other is followed by the possessive pronoun or demonstrative pronoun, it can also refer to both or the other in two groups
What is there in your other hand?
The other refers to the other of two or two groups
I have two daughters.One daughter is two and the other daughter is four.
I hope I can help you out